Excavating-bucket.



M.'S. IVERSON.

EXCAVATING BUCKET.

APPLICATION men 050.19, 1911.

Patented Oct. 17, 1916.

awuentot .5.

m: mamas Finns co.. PHcmLITNQ. wAsnlNcmN, u. c.

MICHAEL S. IVERSON, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGN- MENTS, 0F TWENTY-SIX AND ONE-FOURTH ONE-HUNDREDTI-IS TO HARRY J. MCGOLDRICK, OF PERTH AMBOY, NEW JERSEY, AND TWENTY-THREE AND THREE- FOURTHS ONE-HUNDREDTHS T0 0. TIFFANY RICHARDSON, OF NEW YORK, N. Y.

EXGAVATING-BUCKET.

Specification of Letters Patent.

Patented Oct. 17, 1916.

Application filed. December 19, 1911. Serial No. 666,721.

To all whom it may concern Be it known that 1, MICHAEL S. IVERSON, a citizen of the United States, residing at New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Excavating-Buckets, of which the following is a full, clear, and exact description. I

This invention relates to excavating buckets or scoops and one of its objects is to provide an improved bucket which may be hoisted without tension on the line or cable by which the bucket is dragged forward for filling.

Another object is to provide a bucket in which the stress exerted by the drag line and tending to collapse the sides of the bucket shall be largely decreased, thereby enabling the sides of the bucket itself to be made of lighter material.

A further object is to provide an improved latching or holding mechanism capable of easy release when the contents of the bucket are to be dumped or discharged.

To these and other ends the invention consists in the novel features of construction and combinations of elements hereinafter described, and more particularly set forth in the appended claims.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which- Figure 1 is a side view of the bucket. Fig. 2 is a section on line 2-2 of Fig. 1. Fig. 3 is a plan view of the bucket, showing the means provided to relieve the compressing stress exerted on the sides of the bucket by the drag-line. Fig. 4 is a detail view of the latching mechanism.

The bucket may be of any convenient shape suitable to the nature of the particular work for which it is intended. In the structure illustrated the bucket 10 is rectangular in plan and section, with an open top and forward end, the front or cutting or scooping edge of the bottom being armed with teeth 11 if desired. 7

The bail 12, by which the bucket is hauled forward and also hoisted when loaded, is pivotally attached to the sides of the bucket at points rather nearer the bottom than the top, and in rear of the center of gravity of the bucket when containing its load.

firmly secured to the sides of the bucket by means of U-bo-lts 16. The ends of the dragline branches pass under studs 17 on the sides of the bail and are there connected to pins 18 on the bail. To support the outer ends of these studs and pins, and to protect the parts from fouling, plates 19 are provided, through which the studs and pins extend, said plates being securely fastened by their ends to the bail. It will now be apparent that when the drag-line is advanced, with the bucket resting on the ground, the first effect will be to swing the bail 12 forwardly on its pivots and against the blocks 19 which thus constitute stops to limitthe forward swing of the bail. To limit the rearward swing, stops 20 are provided, mounted on the sides of the bucket at the rear.

Across the top of the bucket at the front is a plate or bar 21 carrying a slotted lug 22 in which a vertical latch-member 23 is pivoted by its lower end, said lower end being inclined. as shown in Fig. 4 to permit a slight forward swing. At its upper end this member is formed with a hook 24 to engage the loop on the bail 12 formed by the rod 25 carried in front of the bail by means of supports 26 mounted on the bail. A coil spring 27 serves to hold the latch-member 23 normally in vertical position, as shown in Fig. 1. WVhen, however, the bail is swung forward by the pull of the drag-line the rod. 25, striking the hook 24:, swings the said latchmember forwardly until the rod clears the depending point of the hook, whereupon the spring 27 draws the member rearwardly to the position shown in Fig. 1, with the hook engaging the locking rod 25. The bail is now locked rigidly to the bucket at a point in front of the center of gravity of the whole, so that when the hoist-line 28, attached to the bail, is drawn up, the bucket will take the position shown in Fig. 6, with the mouth, or open forward end, elevated, so that'the contents will not be discharged.

For the purpose of disengaging the hook or latch-member 23 from the bail-loop or looking rod 25 a forked lever 29 is'provided with its forks 30 embracing and pivoted on the upper end of the latch-member, as shown, and with said forks extending below the rod 25 when said rod is engaged by the hook as in Fig. 1. If now the upper end of the lever is advanced, or, what amounts to the same thing, the upper end of the lever is held while the bucket is being raised, the hook and looking rod will be forced out of engagement with each other, as will be readily understood, by the forks 30, thus allowing the bucket to swing on the bailpivots to the posi tion shown in Fig. 1 in full lines; the clownward swing of the bucket being limited by the stops 20 striking the bail.

The tension of the drag-line 13, as the same is advanced to haul the bucket over the ground and cause it to scoop up the material to be removed from the ground or excava tion, exerts more or less compressing stress on the sides of the bu'cketat the forward edge thereof, said stress depending in amount upon the weight of the bucket, the resistance encountered by the bucket, etc. When work ing in loose or soft material this compression stress may not be great, but at other times it may be excessive, resulting in distortion of the bucket. The cross bar or plate 21 aids in resisting this pressure, and for a similar purpose the sides of the bucket at the for Ward edge may be reinforced by plates 31, in the present instance integral with the cross plate 21. Even with the latter protection, hard usage may result in injury to the bucket by the stress of the drag-line, and I accordingly provide suitable means for decreasing the pressure on the bucket. In the present instance this means is a tension member in the form of a stiff triangular plate 32, secured at one angle to the drag-line 13 and at its other angles to the forward ends of the drag-line branches 13*, 13 as shown in Fig. 3. In size I prefer to have this plate about in the proportions shown in Fig. 3, that is, a little more than half as wide as the bucket, and to have the drag-line branches of such length as to put the plate in front of the bucket a distance about three times the width of the bucket. By this expedient the angle of bend of the drag-line branches at the eyes 1% is rendered very obtuse or flat and the pressure of said branches on the sides of the bucket is correspondingly reduced. In fact so much is this pressure reduced that the re inforcing plates 31 may be omitted, or, if used, may be comparatively thin plates to protect the bucket against injury by blows and the like and to resist wear at the forward edges of the bucket. The tension plate 32 may be provided with reinforcing plates 32 at the forward corner, and 32 along the rear edge between the points at which the dragline branches are connected to the plate 32.

It is to be understood that the structure herein specifically illustrated and described is merely the preferred form of the invention, which can be embodied in other forms without departure from its proper spirit and scope as defined by the following claims.

I claim 1. The combination with a scooping bucket of the kind described, having an open forward end, of a bail pivoted to the sides of the bucket, a drag-line having branches connected to the bail and movably connected with the sides of the bucket in front of the bail, and a combined spreader and tension member between the said branches in front of the bucket to spread the said branches and diminish compression stress exerted on the sides of the bucket by said branches when the bucket is advanced by the drag-line.

2. The combination with a forwardly open bucket, of a drag-line having branches, eyes on the sides of the bucket at the front through which the said branches pass, a bail pivoted to the sides of the bucket and connected to said branches, and a combined spreader and tension member between the said branches in front of the bucket to spread the said branches and diminish compression stress exerted on the sides of the bucket by the branches when the bucket is advanced by the drag-line.

3. The combination with a forwardly open bucket, of a bail pivoted at the sides of the bucket, a drag-line to advance the bucket and having branches connected to the bail, and a combined spreader and tension member between the branches to spread the same and to resist compression stress exerted by the branches as the dragline is advanced.

In testimony whereof I affix my signature in the presence of two subscribing witnesses.

M. Lawson Dyna, S. S. DUNI'IAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

